Beveled-gear wheel



H.'H.-LYON.

. I BEVELED GEAR WHEEL.

No. 244,815. Patented July 26,1881.

Wkmssa 7 MM UNITED STATES PATENT OFFICE.

HENRY H. LYoN, or ALLEGHENY, PENNSYLVANIA.

BEVELED-GEAR WHEEL.

SPECIFICATION forming part 'of Letters Patent No. 244,815, dated July26, 1881. Application filed January 14, 1881. (No model.)

To allwhom it may concern:

Be it known that I, HENRY H. -LYoN, of the city of Allegheny, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Beveled-Gear Wheels; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

In a common form of that class of rollingmills called universal millsthe vertical rolls are driven by gearing and counter-shafts from thehorizontal rolls. The counter-shafts extend through the upper part ofthe housing, and are connected to and drive'the vertical rolls by meansof sliding beveled-gear wheels i mounted on said shafts, meshing intobeveledgear wheels placed on the upper ends of the vertical roll-shafts.The adjustment of the vertical rolls to widen or narrow the pass iseffected by adj L sting-screws passing through bearings at the lowerends of the vertical rolls. The pinions of .the counter-shafts areplaced inside of the vertical rolls to enable the rolls to be adjusted,and are provided with a feather and spline to cause them to turn withthe .shafts. They are adjusted longitudinally of the shafts with thevertical rolls by means of a fork and strap connected to the movablebearings below, which fork takes into a groove made in the hollow shaftof the bevel-pinion. This'construction necessitates making the upperpinions with long hollow shafts, which extend over the bevel-pinions ofthe vertical rolls and afford space for the before -mentioned groove inthat part of said hollow shaft that extends toward the housing beyondthe upper end of the vertical roll. This extension of the hub of thepinion increases the amount of material in the casting, and the wholeconstruction is open to the objection that there is a large amount ofslack, which is increased by wear, that'tends to the loose and shacklyaction of the parts and greatly increases the wear. The resultis that inthe adjustment, the gear-wheels not being held up closely to each other,and tending by their bevel form to be pressed away from each other, theteeth wear unevenly throughout their length and are liable to be brokenoff near the apex of the wheel, and thereby frequently necessitate thestoppage of the mill. To obviate these various difficulties I havedevised my improvement, which I will now describe by reference to theaccompanying drawings, in which- Figurel is a side elevation, partly insection,

of a universal mill provided with my improvement, and Fig. 2 is aseparate view of my improved pinion.

Like letters of reference indicate like parts in each.

My invention consists of forming the bevelpinions of the vertical rollswith a projecting flange, skirt, or shroudin g, which, overlapping thecontiguous edge of the intermeshing gearwheel, will, when adjustedlaterally, carry the driving-wheel with it, and thus obviate thenecessity of a separate adjusting mechanism for the pinions of thedriving-shaft.

In the drawings, a 01. indicate the horizontal rolls; 1) b, the verticalrolls c, the bevel-pinions on the upper ends of the vertical rolls; d,the counter-shafts provided with bevel-pinions 6, for driving thevertical rolls by power taken from the horizontal rolls through suitablegearing; g, the adjusting-bearings of the vertical rolls, and h theadjusting-screws.

The bevel-pinions c are each provided with a skirt, flange, orshrouding, 0, extending diagonally upward and outward from the base ofthe wheel and the lower end of the teeth 0 v The bevel-gear wheel 0 isset in the recess or trough formed by the inclined toothed sides of thewheel 0 and'the flange c, and the flange c then overlaps its edge, sothat if either vertical roll is moved it will carry along with it itsintermeshing pinion c. The pinion c is free to move along thecounter-shaft d, and, resting, as it does, between pinion c and itsskirt 0, it will always be held up to its position and havelittle or noslack. It will consequently wear evenly, and not be liable to be brokenor chipped oil at the teeth. The flange c is preferably cast with thewheel.

This improvement is also applicable to all places where bevel-gearing isused-such as with shafting for various purposes. It holds the pinions uptogether, obviating the necessity of using independent devices for thatpurpose, and prevents wear.

What I claim as my invention, and desire to secure by Letters Patent,is-

A bevel-pinion having a projecting flange or skirt fitted to overlap thecontiguous edge of an intermeshing wheel, substantially as and for thepurposes described.

In testimony whereof I have hereunto set my hand.

Witnesses: HENRY H. LYON.

PHILIP ITTEL, J r., L. M. VANDENT.

